Improvement in spring-hinges



& W1} 55555.

J. HARRINGTON. Spring-Hinge.

' Patent ed Oct. 23, 1877..

PETERS. F'HOTO-LITHOGRAPHER. WASIUNGTON O 0 UNITED STATES PATENT OFFICE.

JOHN HARRINGTON, OF RYDE, ISLE OF WIGHT, ENGLAND.

IMPROVEMENT IN SPRlNG-HlNGES.

$pecifieation forming part of Letters Patent No. 196,355, dated October 23, 1877; application filed September 17,1877; patented in England, April 26, 1876, for fourteen years.

To all whom it may concern:

Be it known that I, J OHN HARRINGTON, of Ryde, Isle of Wight, England, have invented an Improvement in Spring-Hinges, and. for which I have previously taken out English Letters Patent No. 1,758 of 187 6, of which the following is a specification:

This invention relates to spring-hinges for use in connection with doors, gates, 850.; and consists in the combination, with the leaves or halves of a fast-joint hinge, of a spiral spring, connected at its opposite ends with the two hinge-leaves, the spring alone serving as the pintle, as hereinafter more fully described and claimed.

Figure lrepresents myimproved hinge in top view, it being opened; Fig. 2, a front view when opened; Fig. 3, a top view, the hinge being closed and Fig. 4., amodification, showing the invention applied to a double hinge.

The two leaves a b of the hinge and their knuckles c d are made as in common fast-joint hinges or but-ts. The plates will have a greater or less ninnber of knuckles, according to the size and purpose of the hinge.

Instead of, fastening the leaves together by the insertion of a rod or pintle through the knuckles, as commonly done, I employ a spiral spring, 0, and connect it at top with one leaf,

a, and at bottom with the other leaf, I), so that the torsional action of the spring will have a tendency to retain the hinge closed or shut.

A hinge so constructed will be perfectly selfclosing, and may be advantageously used in various places.

I do not, broadly, claim the use of a spiral spring at the joint of a hinge to make it self closing when such spring is used with a pintle or with plug-caps.

This spiral-spring pintle is specially advantageous when applied to double self-closin g hinges, adapted to open from either side in either direction, as in Fig. 4.

I claim- As a newarticle of manufacture, a self-closscribing witnesses.

JOHN HARRINGTON. Witnesses:

G. W. GREGORY, W. J. PRATT. 

